modern-csharp-coding-standards
Modern C# Coding Standards
When to Use This Skill
Use this skill when:
- Writing new C# code or refactoring existing code
- Designing public APIs for libraries or services
- Optimizing performance-critical code paths
- Implementing domain models with strong typing
- Building async/await-heavy applications
- Working with binary data, buffers, or high-throughput scenarios
Core Principles
- Immutability by Default - Use
recordtypes andinit-only properties - Type Safety - Leverage nullable reference types and value objects
- Modern Pattern Matching - Use
switchexpressions and patterns extensively - Async Everywhere - Prefer async APIs with proper cancellation support
- Zero-Allocation Patterns - Use
Span<T>andMemory<T>for performance-critical code
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